Middleware to automatically decompress response bodies. If the “Accept-Encoding” header wasn't set in the request, this sets it to “gzip,deflate” and appropriately handles the compressed response from the server. This resembles what Ruby 1.9+ does internally in Net::HTTP#get.
This middleware is NOT necessary when these adapters are used:
net_http on Ruby 1.9+
net_http_persistent on Ruby 2.0+
em_http
# File lib/faraday_middleware/gzip.rb, line 22 def call(env) env[:request_headers][ACCEPT_ENCODING] ||= SUPPORTED_ENCODINGS @app.call(env).on_complete do |response_env| case response_env[:response_headers][CONTENT_ENCODING] when 'gzip' reset_body(response_env, &method(:uncompress_gzip)) when 'deflate' reset_body(response_env, &method(:inflate)) end end end
# File lib/faraday_middleware/gzip.rb, line 50 def inflate(body) Zlib::Inflate.inflate(body) end
# File lib/faraday_middleware/gzip.rb, line 34 def reset_body(env) env[:body] = yield(env[:body]) env[:response_headers].delete(CONTENT_ENCODING) env[:response_headers][CONTENT_LENGTH] = env[:body].length end
# File lib/faraday_middleware/gzip.rb, line 40 def uncompress_gzip(body) io = StringIO.new(body) gzip_reader = if RUBY_ENCODING Zlib::GzipReader.new(io, :encoding => 'ASCII-8BIT') else Zlib::GzipReader.new(io) end gzip_reader.read end